Tread portion of motorcycle tire



FIG. 1 is a perspective view of a tread portion of a motorcycle tire, it being understood that the tread pattern repeats uniformly with the front elevation view;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a rear elevational view thereof;

FIG. 4 is a right side elevational view thereof;

FIG. 5 is a left side elevational view thereof;

FIG. 6 is an enlarged fragmentary front view thereof; and,

FIG. 7 is an enlarged cross-sectional view thereof.

The portion of the article shown in broken lines is for illustrative purpose only and forms no part of the claimed design. 

The ornamental design for a tread portion of motorcycle tire, as shown and described. 